82521710 has 16 divisors (see below), whose sum is σ = 148878000. Its totient is φ = 32933376.

The previous prime is 82521709. The next prime is 82521727. The reversal of 82521710 is 1712528.

It is a self number, because there is not a number n which added to its sum of digits gives 82521710.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4700 + ... + 13679.

It is an arithmetic number, because the mean of its divisors is an integer number (9304875).

Almost surely, 2^82521710 is an apocalyptic number.

82521710 is a deficient number, since it is larger than the sum of its proper divisors (66356290).

82521710 is a wasteful number, since it uses less digits than its factorization.

82521710 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18835.

The product of its (nonzero) digits is 1120, while the sum is 26.

The square root of 82521710 is about 9084.1460798470. The cubic root of 82521710 is about 435.3675670720.

The spelling of 82521710 in words is "eighty-two million, five hundred twenty-one thousand, seven hundred ten".